WT52832-S2

Forum: bbs.wireless-tag.com WT52832-S2 Wireless-Tag WT52832-S2 Bluetooth Low Energy 5.0 Module DATASHEET Description: WT52832-S2 is a high performance ,low power radio transmit and receive system module use Nordic BLE nRF52832 as the controller chips. It has the smallest volume package in the industry, the size is 18.7*11.1*2.0, suitable for most applications which pay more attention to the size. The module has hardware support on-chip for Bluetooth 5 that includes high throughput and advertising extension, supports low energy Bluetooth S132 SoftDevice, a Bluetooth 5 pre-qualified protocol stack. Customer's MCU is connected to the module by UART port, it will automatically send a broadcast code after the module starts. As the master, APP device can scan and search the broadcast from module in order to establish the connection. After success, it can conduct two-way communication link with mobile device APP by serial port. Through UART interface, the user can exchange data or control the communication parameters of module. The meaning of data is defined by the upper application user. The mobile device can operate to the module through APP, the data will receive by the module and pushed through UART MCU. After the module received a data packet from the client MCU serial port, it will be automatically forwarded to the mobile device. Features：  Operating temperature: -25°C ~75°C, typical 25°C  CPU: nRF52832-QFAA (ARM Cortex™-M4F 32 bit processor)  Memory: 512KB flash + 64KB RAM memory  Transparent transmission (Bridged method) easy to use and fast, no Bluetooth protocol stack development experience can use too.  The user interface uses a standard UART (TTL) Interface, bidirectional data read, easy to operate  Supports serial AT commands, the user can modify the basic parameters like the serial port baud rate, name, MAC address of the module, etc.  Serial data packet length, single data packet can support data length up to 244byte；  Operating distance: 0~45m，class II level  Support System: IOS & Android applicaton  Supply voltage:3.3V  Module comes with PCB antenna  Size: 18.7*11.1*2.0mm  Support  NFC™-A tag  Sleep current: 0.2uA 1 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Applications：  Electronic scales  Electronic cigarette  Smart cups  Smart bracelet  Smart Watch  Bluetooth toys  Intelligent hardware  Smart Homecontents 2 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Contents 1. Work Mode Image ...................................................................................................................... 5 2. Module Pin Definitions ............................................................................................................. 5 3. Pin Directions............................................................................................................................... 6 4. Module package size ................................................................................................................. 7 5. Reflow reference to FIG. ........................................................................................................... 7 6. The Manual for The Serial Transparent Transmission Protocol...................................... 8 7. Serial AT commands Description:........................................................................................... 8 7-1、The test command .......................................................................................................... 8 7-2、MAC address Operation Command .......................................................................... 8 7-3、Operation command of Serial Port Communication Baud-rate ........................ 8 7-4、Operation Command of the Device Name .............................................................. 9 7-5、Set Command of Module Transmit Power .............................................................. 9 7-6、Reset Module Command.............................................................................................10 7-7、Restore the Default Configuration Commands .....................................................10 7-8、Query Command of Module Version Number ......................................................10 7-9、Customized Broadcast Data Command...................................................................10 7-10、Serial Number Command of Customized Product ............................................. 11 7-11、Setting Command of Bluetooth Broadcast Interval ............................................ 11 7-12、Reset Command of Bluetooth Connection Interval............................................ 11 7-13、Setting command of low-power sleep mode....................................................... 11 7-14、Command of firmware upgrade .............................................................................. 11 3 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 8. BLE Protocol Description(app port) ...................................................................................... 12 9. Application Examples of Bluetooth Module....................................................................... 12 10.Appendix： ................................................................................................................................ 20 4 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 1. Work Mode Image VCC UART-TX MCU Application BLE 4.0/5.0 UART-RX Module APP BLE 4.0/5.0 BLE Master circuit GND 2. Module Pin Definitions LED Status 5 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 3. Pin Directions No. Chip pin Module pin Function Description P1 VCC VCC DC P2 GND GND Ground P3 P0.02 RXD UART--RX P4 P0.03 TXD UART--TX P5 P0.04 NC No connection P6 P0.05 NC Wake-up, high level effective P7 P0.06 LED Status P8 P0.07 NC No connection P9 P0.09 NC No connection P10 P0.10 NC No connection P11 P0.11 NC No connection P12 P0.12 NC No connection P13 P0.13 NC No connection P14 P0.14 NC No connection P15 P0.15 NC No connection P16 P0.18 NC No connection P17 P0.21 NC No connection P18 SWDCLK SWDCLK Debug clock signal input P19 SWDIO SWDIO Debug data input P20 GND GND Ground P21 GND GND Ground 2.0~3.6V BLE connected, keeping on BLE disconnected flashing 6 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 4. Module package size Top View 5. Reflow reference to FIG. 7 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 6. The Manual for The Serial Transparent Transmission Protocol Serial transparent transmission means that modules are connected with user MCU via a common serial interface to establish a two-way communication between user MCU and mobile devices. The module can obtain at least 244bytes transmission data. And will forward to the MCU serial receiving port after receiving the data packet. Users can modify the module basic Bluetooth parameters serial AT commands. For details, please check "serial AT command" description. 6-1、 Serial hardware protocol: default 115200bps. 8, No verify bit 1, Stop bit 6-2、 In order to save the size, the module uses the TXD / RXD double wire serial methods, without increasing the data flow control. So it is not recommended to set the serial rate too high, in case of packet loss or error code, recommend to use 115200bps or other baud rates like no higher than 250000bps; 6-3、 Bluetooth module default connection interval is 20ms, if you need to save power and adopt low-speed forwarding mode, you can adjust Bluetooth connection interval via the AT command, the longest interval Bluetooth connectivity is 2000ms; 7. Serial AT commands Description: Module will automatically recognize and distinguish serial data, the data packet began with AT character will be defaulted as AT commands and parsing, and will return the process results, so the data under transparent transmission mode cannot begin with AT+character. 7-1、 The test command Command format: AT\r Syntax: AT+TEST\ r Returning value: OK\r Return value: OK \ r Content: send AT test commands, returning value OK indicates module AT commands tested successfully. 7-2、 MAC address Operation Command Command Format: AT + ADDR?\r Return Value: xxxxxxxxxxxx \ r Content: Return the module’s current MAC address: xxxxxxxxxxxx Command Format: AT + ADDR = 123456789ABC \ r Return value: OK \ r Content: modify the module MAC address again: 123456789ABC, return value OK indicates the success of reset MAC address. Note: If the Bluetooth module modified the module MAC address successfully under being disconnected state, the module will reset immediately , then the module will be broadcast with a new MAC address. Under being connected state, the command is invalid and return ERROR. 7-3、 Operation command of Serial Port Communication Baud-rate Command format: AT + BAUD = 19200 \ r Return value: OK \ r ERROR \ r 8 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Content: Re-edit module communication baud rate to 19200bps, Return OK indicates the success of modification, Return ERROR indicates that the new baud rate modification fails, the reason is set point value is not common serial port baud rate value. Command Format: AT + BAUD?\ r Return Value: 19200 \ r Content: Check the current module serial communication baud rate, the module returns the current setting of the baud rate 19200bps. NOTE: The module default baud rate is 9600bps, because if the serial port baud rate is too high, it need to increase RTS / CTS data flow control, otherwise there will be errors, it is recommended that the baud rate is no more than 250000bps. The serial port baud rates that current module supports : 1200/2400/4800/9600/14400/19200/28800/38400/57600/76800/115200/230400/250000。 7-4、 Operation Command of the Device Name Command Format: AT + NAME = Wireless-tag01 \ r Return value: OK \ r ERROR \ r Content: Rename the module: Wireless-tag01, the length of a name must be no more than 16 bytes, the return value OK indicates the success of the rename, the return ERROR represents the renamed fails, you may have exceeded the limit length . Command Format: AT + NAME?\r Return Value: Wireless-tag01 \ r Content: Check the module’s current device name, serial port return to the module’s current device name: Wireless-tag01. NOTE: Modify the device name under the state of the Bluetooth being connected, the module can not modify and return ERROR. It needs to disconnect the Bluetooth connection and modify, then the module will broadcast with a new device name. 7-5、 Set Command of Module Transmit Power Command Format: AT + RFPM = 3 \ r Return value: OK \ r ERROR \ r Content: Reset the modules transmit power, for example ,set the module transmission power to level 4 ,the transmit power is -8dbm, return OK indicates power reset successes, return ERROR indicates power reset fails, the reason may the set power level is not in the level list. Command Format: AT + RFPM?\r Return Value: -8dbm \ r Content: Check the transmit power configuration of the currentBluetooth module, return to the current setting of the transmission power value: -8dbm. 9 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 NOTE: Bluetooth module currently supports setting transmit power level in the following table: Power Level Power Value 0 +4dbm 1 +3dbm 2 0dbm 3 -4dbm 4 -8dbm 5 -12dbm 6 -16dbm 7 -20dbm 8 -40dbm 7-6、 Reset Module Command Command Format: AT + RESET \ r Return value: OK \ r Content: Module reset command, returns OK, the module starts reset . 7-7、 Restore the Default Configuration Commands Command Format: AT + DEFAULT \ r Return value: OK \ r Content: Recover the module configuration parameters to the default parameters, MAC address will also restore to the factory default address, return OK indicates the module successful recovery. 7-8、 Query Command of Module Version Number Command Format: AT + VERSION? \ r Return Value: V1.2.0 \ r Content: Query module current version, return to module current version V1.2.0. 7-9、 Customized Broadcast Data Command Command Format: AT + ADD = 0123456A \ r Return value: OK \ r ERROR \ r Content: Users can add the customized broadcast data in Bluetooth broadcast data, such as adding 0123456A data in Bluetooth broadcast data, returns OK indicates added successfully , returns ERROR indicates failure added, data length may exceed the maximum limit 16byte or under being connected state. 10 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 7-10、 Serial Number Command of Customized Product Command Format: AT + PID = ABCD \ r Return value: OK \ r ERROR \ r Content: customized product serial number added in the broadcast data, returns OK indicates that the custom has been added, return ERROR indicates failure, possibly because the custom data is beyond the scope required by the serial number or under being connected state. the serial number of the module supports the content within 0000-FFFF. 7-11、 Setting Command of Bluetooth Broadcast Interval Command Format: Return value: AT + ADP = 500 \ r OK \ r ERROR \ r Contents: Bluetooth Broadcasting valid interval is 100ms-4000ms, if re-configure the Bluetooth radio interval to 500ms, returns OK indicates reset successfully, ERROR indicates reset failed, possibly because under being connected state. 7-12、 Reset Command of Bluetooth Connection Interval Command Format: AT + CIT = 300 \ r Return value: OK \ r ERROR \ r Content: An active Bluetooth connection interval is 20ms-2000ms, if resetting Bluetooth connection time interval to 300ms, returns OK indicates reset successfully, the return ERROR indicates reset failed, possibly because under being connected state. NOTE: The module does not support dynamic modification process connection interval, only work when restart the module after modification. 7-13、 Setting command of low-power sleep mode Command Format: AT + SLEEP \ r Return value: OK \ r Content: To reduce module power consumption, module in idle state can be used to set to sleep by the sleep command, and then Bluetooth is turned off, power consumption is reduced. Module in sleep mode can be wake-up by power reset. 7-14、 Command of firmware upgrade Command Format: AT + DFU \ r Return value: OK \ r Content: returns OK, the mode enters firmware upgrade mode. 11 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 8. BLE Protocol Description(app port) [Service UUID: 0x1234 ] Eigen values 0x1235 characteristic Write Without Response [Service UUID: 0x1234] Eigen values characteristic 0x1236 Notify 9. Application Examples of Bluetooth Module  Accessibility BLE-DK, WT51822-DK is tool designed for easy use its Wireless-Tag BLE Bluetooth WT51822-S1/S2/S4AT. You can easily connect the Bluetooth module with PC through the WT51822-DK. The Bluetooth module works as slave device, can be searched and matched by Bluetooth master terminal. After matched, input the data to Bluetooth module via serial port debugging tools and the Bluetooth module resent the data to the master module; at the same time, the Bluetooth module can send the data received from the master module to the serial port debugging tools. Developers can easily check the data content between the Bluetooth module and the master terminal.  The connection method of DEMO-Kit Tools and Bluetooth module: DEMO-Kit Tools interface is the currently popular XBee interface. Bluetooth module connect with Kit Tools by XBee adapter board. Welding the module posted in the corresponding XBee adapter board, and then inserted the adapter board into the Kit tools. 12 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 XBee adapter plate shown as below:  DEMO-Kit tool uses a FTDI USB-to-UART chip. so before connecting with PC, you first need to install the FTDI chip driver. After driver installation is successful, connect DEMO-KIT with PC through the USB cable, then the PC side can identify DEMO-Kit tools serial numbers;  Open the serial debugging tools in PC terminal, for example, the serial debugging assistant, the port number is FTDI Chip mapping Virtual COM port number, the serial port parameters set as follows: 9600 baud,; data format is 8 data bits, No parity, 1 stop bit format, and then open the serial port, read and modify the current Bluetooth module settings by AT commands , as shown; 13 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com  WT52832-S2 Search the slave devices by mobile APP terminal, you can use thepublicly recognized bluetooth test  software  LightBlue  in  IOS  system,  and  you  can  also  use  our  company’s  self-made Blurtooth serial APP testing software in Android system. After searched the device name of Bluetooth module, you can successfully paired by clicking itand establish a Bluetooth connection, and send data to a Bluetooth module through this APP tool to establish data communication between a mobile terminal and Bluetooth modules. A. In the IOS system (only iphone4S or above version phones support Bluetooth 4.0) use LightBlue to test module connect function. Firstly, open iphone Bluetooth, run LightBlue APP, when LightBlue is running, it will automatically search for the slave unit, the slave list will be displayed with some main information, UUID Services, transmitting power, device names etc. 14 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Click the slave unit you want to connect, iphone will connect with the salve, afterthis, the program will automatically search all services from slave machine, as shown below. Enter into the service by clicking the cooresponding service , you can see some characteristics included in the Services, shown as below 15 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Click ‘Write new value’, will enter into the communication field of Characteristic, write the input value, as below: Module will push the data sets to the serial port via DEMO-KIT after receiving the data from LightBlue which can be displayed on the serial debugging tools by PC side: 16 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com B. WT52832-S2 In the Android system (only Android 4.3 or above systems support Bluetooth 4.0) , you can use our company self-made APP serial debugging tools: Using APP tools to search for Bluetooth devices: 17 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 Connect with Bluetooth device, and input data in the serial transmission window, sends data to Bluetooth device, the module will push the data sets to the serial port via DEMO-KIT after receiving the data from LightBlue which can be displayed on the serial debugging tools by PC side: 18 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 You can also use PC side debug tool to send data to the APP serial tool by module, APP display window shows the data sent by Module App serial tool received data and showed in the display window: It will create more comvenience and shorten the development period of bluetooth project by using our DEMO-KIT tool and self made APP serial debugging tool 19 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com Forum: bbs.wireless-tag.com WT52832-S2 10. Appendix： For more technical supports, please send e-mail to technical@wireless-tag.com 20 / 20 Wireless-Tag Technology www.wireless-tag.com technical@wireless-tag.com